Evaluation of different marigold cultivars against root knot nematode (Meloidogyne incognita) under pot culture condition

An experiment was carried out to study the effect of different marigold cultivars viz. African marigold, French marigold, Marigold Gulzafri Yellow, Marigold Gulzafri Orange, Marigold Dhan Basanti and Marigold Hawaii Orange on population and multiplication factors of root knot nematode Meloidogyne incognita in the field of Insectary premises of Entomology section, College of Agriculture, Nagpur during Aug. – Oct. 2017.French marigold Tagetes patula caused significant reduction in the number of root galls (8 / plant), root nematode population (29.80 / 8 galls) and soil nematode population (150.25 / 50 ml) with a remarkable growth of tomato plant (31.5 cm) as compared to other marigold cultivars and control.